Warzone Modern battles is a set of free modern Wargaming rules for 1:72 or 20mm Squad/Platoon games.
rules
Fast Play Medieval Skirmish Rules
Fast Play Medieval Skirmish Rules are
designed for fairly large-scale skirmishes; up to about 80 men a player. They will do for many periods or settings, so long as troops can be classed into three distinct broad categories of quality. The rules emphasise the importance of sticking together for mutual protection and the value of weapons with longer reach: spearmen can fight in two ranks, pikemen in three. Men in the second rank with javelins can support.
The rules recognise two ways in which figures may be combined, Contingents and Groups. Contingents are real units (e.g. a Contingent of 15 archers from Berwick under their bill-armed vintnar) and are used for organisational and morale purposes in these rules. A good size for a contingent is 32 points. Groups are temporary (sometimes fleeting) arrangements of men occurring in combat situations. Hand-to-hand combat is fought between Groups (which may be as small as one man each) and casualties occur almost at random within the Group
Also, an add-on for leaders and dueling.
Border Reiver Feud Wargame Rules
Border Reiver is a set of miniatures rules for playing medieval and renaissance era games in the border regions between England and Scotland.
Viking Raid Wargames Rules
Viking Raid is a set of free wargames rules for carrying out a competitive Viking raid. The set uses playing cards as an integral mechanism.
Island Mayhem Pirate Rules
Island Mayhem is a set of rules for playing games in which 25mm – 28mm Pirates are searching for treasure.